Comparison of marginal adaptation, internal fitness and microleakage of Zolid, Zirconia and Empress 2 all-ceramic crown materials (An in vitro study)

M.Sc,; Ph.D,; Ammar Atta-Allah Ali B.D.S, Dr.; M.Sc,; Nasr Rifat Sabea. B.D.S, Dr.

	Comparison of marginal adaptation, internal fitness and microleakage of Zolid, Zirconia and Empress 2 all-ceramic crown materials (An in vitro study)
MUSTANSIRIA DENTAL JOURNAL
Article 1, Volume 10, Issue 2, 2013, Pages 184-192
Authors
; ; Dr. Ammar Atta-Allah Ali B.D.S; ; Dr. Nasr Rifat Sabea. B.D.S
Abstract
The purposes of this in vitro study were to compare the marginal adaptation, internal fitness and the microleakage of three CAD-CAM all ceramic crowns materials: Zolid, Zircon, and Empress 2. This study also evaluated the correlation of microleakage of these ceramic crowns materials to the marginal fitness. Forty-five maxillary first premolar teeth were prepared with 2-mm occlusal reduction and 1-mm all around shoulder finish line, teeth were randomly divided into three main groups according to the type of ceramic material that was used (n=15). Group 1: received a CAD-CAM Ceramill Zolid® unilayered transparent zircon Group 2: received a CAD-CAM Ceramill ZI units (Zirconium oxide) Group 3: received a CAD-CAM Ceramill wax units that would subsequently invested and heat pressed to fabricate a hot-press ceramic crowns. The results showed statistical significant difference in marginal fitness, internal fitness and microleakage between Zolid group and other groups (P>0.0001). There was highly significant correlation of the marginal and internal fitness, whilst there was no significant correlation marginal fitness and microleakage.
Keywords
Keywords CAD; CAM; Empress; internal fitness; marginal gap; Microleakage; Zirconia; Zolid

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